Crocodiles, antelopes, elephants, bears and penguins. They are in the game because that just go into the folder x: \ Program Files \ THQ \ Blue Fang Games \ World of Zoo \ data \ 00_Retail \ Sound \ Soundbanks \ 00_Retail_PC and look for some type of files will see only Objects_PenguinExhibit_00.bnk niewiem how it turn

You have to complete objectives like handfeeding an animal, or grooming it , things like that give you star tokens. when in the exhibit press the back button an click objectives and their will be a list of them.